Lion Mail Yahoo IMAP Sync Inconsistent
Observed behavior: Mail is syncing with Yahoo IMAP every five minutes, but when I delete or mark messages as read from the Yahoo website, iPhone or any other device, the Mail app will not reflect these changes even after the auto or manul sync. In order to force Mail to sync accurately, I have to take the account offline and then switch it back online. Then, Mail syncs correctly.
If I force the re-sync WITHOUT first taking the account offline, the sync is not accurate. Even if new messages appear in the mailbox, the other deleted and marked-read messages are not accurately reflected in the sync. Again, the only way to make it accurate is to take offline and bring back online. Of course, if I restart Mail, this also resolves the issue. Restarting Mail is the same thing as far as the Yahoo IMAP server is concerned.
This problem is easily reproducible. I have tried a number of remedies.
1. I deleted the original Yahoo IMAP account and added a new Yahoo IMAP account with a new name multiple times. No change.
2. I restarted my Mac to see if this helps. Other than the temporary effect of restarting Mail, this does not change a thing.
3. I have looked on the Yahoo site, and well... Here I am. 😕
4. I also looked on Gmail site, almost more helpful.
5. Finally, I looked on the Apple Support Communities but cannot find an answer.
So, let's see if there are others having the same issue and maybe there is a solution somewhere.
Thank you.